Help😞

So here’s the backstory,My boyfriend and I started dating back in 2014 this July we will make 5 years together. We started dating when we were both 16. Last year I cheated on him. So we broke up but we still lived together. We broke up December but we would still have sex so I ended up getting pregnant in June, we got back together. Fast forward to now my baby is 11 weeks and I just don’t feel happy with him😞, he’s such a great guy and I want to be with him but I don’t feel happy. Also he’s told me he doesn’t believe in marriage so that also has me super bummed out, im really big on that.

So my question is are these just pp feelings :( or is this really how I’m feeling. I don’t want to leave him and then regret it.